I know the feeling. We keep hoping they will cross the bridge themselves, because it is not our place to play God(dess). It actually took us months to decide to put Shadow our Blue Heeler down over a year ago. And putting our cat Bedevere down nearly 20 years ago is still fresh in my mind. Just love them and make them as comfortable as possible for as long as you can. We stayed with Shadow until the end, holding her in our arms. As Mary Ann Kennedy said “I have been blessed with so many dear companions”. I treasure each day with them, even if it is a rainy, dreary, do nothing day standing around the barn. They understand.